Invention Grant
- Patent Title: Distributed antenna diversity transmission method
- Patent Title (中): 分布式天线分集传输方式
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Application No.: US12029355Application Date: 2008-02-11
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Publication No.: US08213533B2Publication Date: 2012-07-03
- Inventor: Abdulrauf Hafeez
- Applicant: Abdulrauf Hafeez
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget LM Ericsson (publ)
- Current Assignee: Telefonaktiebolaget LM Ericsson (publ)
- Current Assignee Address: SE Stockholm
- Agency: Coats & Bennett, P.L.L.C.
- Main IPC: H04L27/00
- IPC: H04L27/00

Abstract:
A Distributed Antenna System employs a downlink transmission method that requires limited channel information feedback and less coherency between signals than is required for information broadcast. Distributed antennas are treated as diversity antennas with a given power allocation. Each antenna can transmit to multiple UEs by transmitting a weighed sum of their signals, and multiple antennas can transmit to one UE by transmitting weighed space-time (or space-frequency) coded signals. The power allocation weights are determined as an optimum power allocation policy with per-antenna power constraints.
Public/Granted literature
- US20090202020A1 Distributed Antenna Diversity Transmission Method Public/Granted day:2009-08-13
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